diff --git a/cpukit/libnetworking/nfs/bootp_subr.c b/cpukit/libnetworking/nfs/bootp_subr.c
index 7f46582a41..3cca435a72 100644
--- a/cpukit/libnetworking/nfs/bootp_subr.c
+++ b/cpukit/libnetworking/nfs/bootp_subr.c
@@ -43,6 +43,7 @@
  */
 
 #include <sys/param.h>
+#include <sys/ucred.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/conf.h>